sysdeps/unix/sysv/linux/mips/register-dump.h

   1 /* Dump registers.
   2    Copyright (C) 2000, 2001, 2002, 2006 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Andreas Jaeger <aj@suse.de>, 2000.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library.  If not, see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 #include <sys/uio.h>
  21 #include <stdio-common/_itoa.h>
  22
  23 /* We will print the register dump in this format:
  24
  25  R0   XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX
  26  R8   XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX
  27  R16  XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX
  28  R24  XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX
  29             pc       lo       hi
  30       XXXXXXXX XXXXXXXX XXXXXXXX
  31  The FPU registers will not be printed.
  32 */
  33
  34 static void
  35 hexvalue (unsigned long int value, char *buf, size_t len)
  36 {
  37   char *cp = _itoa_word (value, buf + len, 16, 0);
  38   while (cp > buf)
  39     *--cp = '0';
  40 }
  41
  42 static void
  43 register_dump (int fd, struct sigcontext *ctx)
  44 {
  45   char regs[38][8];
  46   struct iovec iov[38 * 2 + 10];
  47   size_t nr = 0;
  48   int i;
  49
  50 #define ADD_STRING(str) \
  51   iov[nr].iov_base = (char *) str;                                            \
  52   iov[nr].iov_len = strlen (str);                                             \
  53   ++nr
  54 #define ADD_MEM(str, len) \
  55   iov[nr].iov_base = str;                                                     \
  56   iov[nr].iov_len = len;                                                      \
  57   ++nr
  58
  59   /* Generate strings of register contents.  */
  60   for (i = 0; i < 32; i++)
  61     hexvalue (ctx->sc_regs[i], regs[i], 8);
  62   hexvalue (ctx->sc_pc, regs[32], 8);
  63   hexvalue (ctx->sc_mdhi, regs[33], 8);
  64   hexvalue (ctx->sc_mdlo, regs[34], 8);
  65
  66   /* Generate the output.  */
  67   ADD_STRING ("Register dump:\n\n R0   ");
  68   for (i = 0; i < 8; i++)
  69     {
  70       ADD_MEM (regs[i], 8);
  71       ADD_STRING (" ");
  72     }
  73   ADD_STRING ("\n R8   ");
  74   for (i = 8; i < 16; i++)
  75     {
  76       ADD_MEM (regs[i], 8);
  77       ADD_STRING (" ");
  78     }
  79   ADD_STRING ("\n R16  ");
  80   for (i = 16; i < 24; i++)
  81     {
  82       ADD_MEM (regs[i], 8);
  83       ADD_STRING (" ");
  84     }
  85   ADD_STRING ("\n R24  ");
  86   for (i = 24; i < 32; i++)
  87     {
  88       ADD_MEM (regs[i], 8);
  89       ADD_STRING (" ");
  90     }
  91   ADD_STRING ("\n            pc       lo       hi\n      ");
  92   for (i = 32; i < 35; i++)
  93     {
  94       ADD_MEM (regs[i], 8);
  95       ADD_STRING (" ");
  96     }
  97   ADD_STRING ("\n");
  98
  99   /* Write the stuff out.  */
 100   writev (fd, iov, nr);
 101 }
 102
 103
 104 #define REGISTER_DUMP register_dump (fd, ctx)